Hot continuous rolling strip steel head dynamic variable looping unit tension control method

A technology of unit tension and control method, applied in the direction of tension/pressure control, metal rolling, etc., to reduce abnormal downtime, reduce failure time and scrap, and ensure normal operation.

Active Publication Date: 2018-05-18
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of strip head pressure sleeve, the present invention is based on the principle of looper torque control technology, and on the premise of ensuring the normal control of the str...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1: Take the 4# looper at the head of the 2.6mm*1250mm silicon 60 strip steel as an example:

[0041] When the looper angle of the strip head is lower than 20°, and the 4# looper torque deviation value is -3500 Nm, that is, in the range of -4000<△M≤-3000, the dynamic change of the unit tension value of the 4# looper strip is T1 =T+3, the absolute value of the looper torque deviation △M can be reduced immediately (that is, the looper torque deviation △M to below -2000Nm), so as to realize the stable adjustment of the 4# looper, that is, reduce the servo output of the looper, Avoid strip looper fall.

Embodiment 2

[0042] Embodiment 2: Take the 1.5mm*950mm magnetic pole steel strip head 5# looper as an example:

[0043] When the looper angle of the strip head is lower than 20°, and the deviation value of the 5# looper torque is -2500 Nm, that is, in the range of -3000<△M, there is no need to change the unit tension value of the 5# looper strip steel, which is T, according to Normal control realizes 5# looper torque adjustment and set amount (angle) control; when the strip head looper angle is lower than 20°, the 5# looper torque deviation value is -4500 Nm, that is, -5000<△M≤-4000 In the range, dynamically changing the unit tension value of the 5# looper strip steel is T1=T+4, which can immediately reduce the absolute value of the looper torque deviation △M (that is, the looper torque deviation △M to below -2500Nm ) so as to realize the stable adjustment of the 5# looper, that is to reduce the servo output of the looper, and avoid the looper of the strip.

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PUM

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Abstract

Disclosed is a hot continuous rolling steel head dynamic variable looping unit tension control method, and the hot continuous rolling strip head dynamic variable looping unit tension control method belongs to the field of steel rolling control. The hot continuous rolling strip head dynamic variable looping unit tension control method is characterized in that when the angle of a strip steel head loop is less than 20 degrees, the tension setting of a looping unit is dynamically increased according to torque deviation value [delta]M. The hot continuous rolling strip head dynamic variable loopingunit tension control method eliminates the abnormal hidden danger of the loop movement, saves the equipment failure time, solves the abnormal loose of the loop, and achieves good benefits. The hot continuous rolling strip head dynamic variable looping unit tension control method is suitable for being used in the control of a hot rolled strip finishing mill.

Description

technical field [0001] The invention belongs to the technical field of automatic control of finish rolling of hot continuous strip steel rolling line. Background technique [0002] The hot continuous rolling finishing mill generally has 7 racks and 6 looper devices. The number of loopers corresponds to the number of racks, that is, the 4# looper corresponds to the 4# rack, and the downstream rack of the looper is the 5# machine. shelf. The rack numbers of this patent are F0~F6, and the loopers are 0#~5#. Due to the development of new varieties and the setting of the secondary model, sometimes the actual torque of the looper tension at the strip head is large, resulting in a large negative deviation of the looper torque, which causes the strip head to press down on the looper device and cause the looper to fall, resulting in scrap steel , Seriously affect the normal production of the rolling line, and bring great economic losses to the enterprise. [0003] During the rolli...

Claims

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Application Information

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IPC IPC(8): B21B37/50
CPCB21B37/50B21B2201/06B21B2265/04B21B2273/14
Inventor 张世厚闫峥嵘武海平康炜
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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